SODIUM SULFATE
Sodium sulfate is the sodium salt of sulfuric acid.It exists in both anhydrous(water-free)and hydrated forms.The anhydrous form is a white crystalline solid known as thenardite,while the decahydrate form(Na₂SO₄·10H₂O)is commonly known as Glauber's salt or mirabilite
Physical and Chemical Properties
• Appearance:White crystalline solid(anhydrous);colorless monoclinic crystals(decahydrate).
• Molecular Formula:Na₂SO₄(anhydrous),Na₂SO₄·10H₂O(decahydrate).
• Molecular Weight:142.04 g/mol(anhydrous),322.20 g/mol(decahydrate).
• Melting Point:884°C(anhydrous),32.4°C(decahydrate).
• Boiling Point:1429°C(anhydrous).
• Density:2.664 g/cm³(anhydrous),1.464 g/cm³(decahydrate).
• Solubility:Soluble in water and glycerol;insoluble in ethanol.
• pH:Neutral(aqueous solution).
• Other Properties:Hygroscopic(anhydrous form);forms supersaturated solutions easily.
item | value |
Classification | Sulphate |
Type | Sodium Sulfite |
CAS No. | 7757-83-7 |
MF | Na2SO3 |
EINECS No. | 231-821-4 |
Place of Origin | China |
Grade Standard | Food Grade, Industrial Grade |
Purity | 97% 98% |
Appearance | White Crystal Powder |
Application | Film Development, Reducing Agent |
Brand Name | BANGZE |
Package | 25kg/Ton Bag,PP+PE Bag |
Hs code | 2832100000 |
MOQ | 1 Ton |
Sample | Within 1000g |
Application
Sodium sulfate has a wide range of applications across various industries
1. Chemical Industry: It is used to manufacture sodium sulfide, sodium silicate (also known as water glass), and other chemical products.
2. Paper Industry: It serves as a cooking agent in the production of kraft pulp.
3. Glass Industry: It acts as a co-solvent, replacing soda ash in glass manufacturing processes.
4. Textile Industry: It is utilized to prepare coagulants for vinylon spinning.
5. Metallurgy and Leather: It is employed in nonferrous metal metallurgy and leather processing.
6. Other Applications: Sodium sulfate is used in the production of pulp, glass, water glass, and porcelain glaze. Additionally, it serves as a laxative and an antidote for barium salt poisoning. It is also a by-product of hydrochloric acid production, derived from the reaction of salt and sulfuric acid.
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